You have to first remove Premium by the method shown below, and then you have to switch to paying by credit/debit card. Read the info below including the removal FAQ with screen images.
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Are you a California filer, and did you choose to pay the TurboTax
product fees out of your Federal refund? If so, that option to pay out
of the refund is bundled with other benefits and called "Premium
Services" for 39.99 (34.99 in Free Edition.)
See this
FAQ: What is the Premium Services Bundle?
https://ttlc.intuit.com/questions/2204687-what-is-the-premium-services-bundle
If
you want to, you can remove Premium Services prior to filing, and then
choose to pay for your return with a credit card, debit card, or a
prepaid debit card you can buy in a store. Here's how:
FAQ: How do I remove Premium Services? (California filers)
https://ttlc.intuit.com/questions/2154391-how-do-i-remove-the-premium-services-fee
